git subrepo pull --force emummc

subrepo:
  subdir:   "emummc"
  merged:   "2fc47cbb8"
upstream:
  origin:   "https://github.com/lulle2007200/emuMMC.git"
  branch:   "develop"
  commit:   "2fc47cbb8"
git-subrepo:
  version:  "0.4.9"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "30db3b8"

emummc/source/fatal/bdk/thermal/fan.c

@@ -0,0 +1,128 @@
+/*
+ * Fan driver for Nintendo Switch
+ *
+ * Copyright (c) 2018-2024 CTCaer
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <thermal/fan.h>
+#include <power/regulator_5v.h>
+#include <soc/bpmp.h>
+#include <soc/clock.h>
+#include <soc/fuse.h>
+#include <soc/gpio.h>
+#include <soc/hw_init.h>
+#include <soc/pinmux.h>
+#include <soc/timer.h>
+#include <soc/t210.h>
+
+void fan_set_duty(u32 duty)
+{
+	static bool fan_init = false;
+	static u16  curr_duty = -1;
+
+	if (duty > 236)
+		duty = 236;
+
+	if (curr_duty == duty)
+		return;
+
+	curr_duty = duty;
+
+	if (!fan_init)
+	{
+		// Fan tachometer.
+		u32 pull_resistor = hw_get_chip_id() == GP_HIDREV_MAJOR_T210 ? PINMUX_PULL_UP : 0;
+		PINMUX_AUX(PINMUX_AUX_CAM1_PWDN) = PINMUX_TRISTATE | PINMUX_INPUT_ENABLE | pull_resistor | 1;
+		gpio_direction_input(GPIO_PORT_S, GPIO_PIN_7);
+
+		// Enable PWM if disabled.
+		if (fuse_read_hw_type() == FUSE_NX_HW_TYPE_AULA)
+			clock_enable_pwm();
+
+		PWM(PWM_CONTROLLER_PWM_CSR_1) = PWM_CSR_EN | (0x100 << 16); // Max PWM to disable fan.
+
+		PINMUX_AUX(PINMUX_AUX_LCD_GPIO2) = 1; // Set source to PWM1.
+		gpio_config(GPIO_PORT_V, GPIO_PIN_4, GPIO_MODE_SPIO); // Fan power mode.
+
+		fan_init = true;
+	}
+
+	// Inverted polarity.
+	u32 inv_duty = 236 - duty;
+
+	// If disabled send a 0 duty.
+	if (inv_duty == 236)
+	{
+		PWM(PWM_CONTROLLER_PWM_CSR_1) = PWM_CSR_EN | (0x100 << 16); // Bit 24 is absolute 0%.
+		regulator_5v_disable(REGULATOR_5V_FAN);
+
+		// Disable fan.
+		PINMUX_AUX(PINMUX_AUX_LCD_GPIO2) = PINMUX_INPUT_ENABLE | PINMUX_PARKED    |
+										   PINMUX_TRISTATE     | PINMUX_PULL_DOWN; // Set source to PWM1.
+	}
+	else // Set PWM duty.
+	{
+		// Fan power supply.
+		regulator_5v_enable(REGULATOR_5V_FAN);
+		PWM(PWM_CONTROLLER_PWM_CSR_1) = PWM_CSR_EN | (inv_duty << 16);
+
+		// Enable fan.
+		PINMUX_AUX(PINMUX_AUX_LCD_GPIO2) = 1; // Set source to PWM1.
+	}
+}
+
+void fan_get_speed(u32 *duty, u32 *rpm)
+{
+	if (rpm)
+	{
+		u32  irq_count = 0;
+		bool should_read = true;
+
+		// Poll irqs for 2 seconds. (5 seconds for accurate count).
+		int  timer = get_tmr_us() + 2000000;
+		while ((timer - get_tmr_us()) > 0)
+		{
+			bool irq_val = gpio_read(GPIO_PORT_S, GPIO_PIN_7);
+			if (irq_val && should_read)
+			{
+				irq_count++;
+				should_read = false;
+			}
+			else if (!irq_val)
+				should_read = true;
+		}
+
+		// Halve the irq count.
+		irq_count /= 2;
+
+		// Calculate rpm based on triggered interrupts.
+		*rpm = irq_count * (60 / 2);
+	}
+
+	if (duty)
+		*duty = 236 - ((PWM(PWM_CONTROLLER_PWM_CSR_1) >> 16) & 0xFF);
+}
+
+void fan_set_from_temp(u32 temp)
+{
+	if (temp >= 52)
+		fan_set_duty(102);
+	else if (temp >= 47)
+		fan_set_duty(76);
+	else if (temp >= 42)
+		fan_set_duty(51);
+	else if (temp <= 39)
+		fan_set_duty(0);
+}